September in Wenzhou averages a daily high of 30°C with nights around 23.3°C. Expect roughly 11.5 wet days totalling 177.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Wenzhou is October.
Based on RUIAN, CH (24.1km), 1995–2024. 17 years of September data.